Key-fastener



(No Model.)

W. H. FLINN.

. KEY FASTENER. No. 279,930. Patented June 26, 1883 Fig.1. I

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1o. gitudinal section, of a key-fastener of my im- U ITE STATES a PATENTOFFICE;

WILLIAM H. FLINN, or NASHUA, new HAMPSHIRE.

KEY-FASTENER.

SPEGIFIdATION forming part of Letters Patent No. 279,930, dated June 26,1883.

Application filed March 2. 1883. (NomodcL) To all whom, it mayc0n0ern.-' Be it known that I, WILLIAM H. FLINN, of Nashua, in thecounty of Hillsborough, of the State of New Hampshire, have invented anew and useful Improvement in Key-Fasteners for DoorLocks and I dohereby declare the same to be described in the following specificationand represented in the accompanying drawings, of which-- Figure 1 is afrontview, and Fig. 2 a 1011- ,proved kind applied to the key-hole ofadoor, such door being supposed to be furnished with a mortise-lock toits keyhole. Fig. 3 is a rear view, and Fig. 4 an edge view, of thekey-fastener.

The nature of my invention I have defined or attempted to define in theclaim hereinafter presented.

This key-fastener is a vibratory one, it being near one end of itpivoted to the door, so

as to be capable of being swung either to 'the right or left relativelyto' the key-hole. It is shown in the drawings at A, and as fixed to thedoor B by means of a screw, 0,, the part a of whose head, which iswithin the fastener, is a conic frustum. The body of the fastener is afiat plate of metal, shaped as shown, and having within it a key-hole,12, formed like that of the door, and, besides, the fastener has in it,leading laterally out of its key-hole, a notch,

c, to receive the flat or prismatic shank of the gers of a person are tobe applied to move the fastener laterally relatively to the key;

The socket e, for reception of the conical head of the screw, is notconical, but cylindrical, the head being loose therein or not touchingit, except at or near the lesser base of itsconieal part, or where thehead is joined to the shank of the screw.

There projects from the rear part of the fastener, concentrically withits piyot-hole f, an annular flange, g, from whose edge there areextended three or other suitable number of teeth or spurs, 71. On thepivotal screw being firmly set up, the annular flange will be crowdedmore or less into the wood of the door, so as to form therein acorresponding circular groove, which, with the flange, will operate tohold the fastener with sufficient friction when in either of its extremepositions. On the screw being set up, as described, so as to crowd thespurs into the wood', and the annularfiange more or less therein, thekey-hole of the fastener being directly in front of that of the door, orin position forthe introduction of the key into or its removal from suchkey-hole of the door, the key-fastener is to be turned laterally withforce to cause each of the teeth or spurs to cut into the wood in thearc of a circle. From this it will be seen that the spurs and the cutsthus made by them answer as .means of arresting the fastener or stoppingit in-its proper positi on relatively to the key-hole of the door forthe insertion of the key therein through the fastener. After suchinsertion and the bolt of the lock may have been thrown forward by thekey, the fastener is to be turned laterally to cause the keyshank toenter the notch, whereby the key will be prevented frombeing revolved bynippers or other means applied to it.

The fastener may be somewhat differently formed from that shown anddescribed, so long as it may embrace the principle or principles of myinvention.

I make no claim to a lock-escutcheon made as represented in the UnitedStates Patent No. 269, 744, which consists of two circular platespivoted together and provided with key-holes and slots, &c., such beingfor use with a lock to be fixed to the outer side of a door, whereas mykey-fastener is to be applied to and to work directly against a door,and for use with a mortise-lock adapted thereto, and it is in one piece,and has an annular flange to enter the door, whereas there is nothing ofthe kind to either of the eseutcheon-plates of the said patent, andnothing to operate in like manner, and no spur or spurs to extend fromthe plate into the door, and to be used for cutting nular flange orbearing and one or more spurs, a groove or grooves in the latter, todetermine as described, projecting from the latter, all beivith the saidspur or spurs the extent of lat ing arranged substantially as set forth.

eral movement of the fastener. WILLIAM HENRY FLINN. 5 I clain1\Vitnesses:

The vibratory key-fastener provided with A. L. SEOKETT, the key-hole andits notch, and with the an- Tl. S. SARGENT.

